korien_oct29“Is that a ghost or just the wind?”
“I’m not sure.”

“What time does the Halloween party start?”
“I think it was 7:00, but I’m not sure. Let’s ask.”

“I’m not sure if I locked the door when I left.”

“I’m not sure” can be the same as “I don’t know”. You can also use it when you have an idea what the answer is, but aren’t very confident that it’s correct.




「I’m not sure」は「I don’t know」と同じように使うことがあります。答えの予想があるけどあまり自信がないときにも使えます。